initial commit

backend/dbutil/null.go

@@ -0,0 +1,40 @@
+package dbutil
+
+import (
+	"database/sql"
+)
+
+func SerializeMaybeString(str *string) sql.NullString {
+	if str == nil {
+		return sql.NullString{
+			String: "",
+			Valid:  false,
+		}
+	}
+
+	return sql.NullString{
+		String: *str,
+		Valid:  true,
+	}
+}
+
+func DeserializeMaybeString(str sql.NullString) *string {
+	if !str.Valid {
+		return nil
+	}
+	return &str.String
+}
+
+func SerializeMaybeInt(i *int64) sql.NullInt64 {
+	if i == nil {
+		return sql.NullInt64{
+			Int64: 0,
+			Valid: false,
+		}
+	}
+
+	return sql.NullInt64{
+		Int64: int64(*i),
+		Valid: true,
+	}
+}